The IERS extragalactic Celestial Reference Frame and its tie with HIPPARCOS.

Details The IERS extragalactic Celestial Reference Frame and its tie with HIPPARCOS. The IERS extragalactic Celestial Reference Frame and its tie with HIPPARCOS.

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991itn.....7....1a&link_type=abstract

IERS Tech. Note, No. 7, p. 1 - 73

Computer Science

Reference Systems: Hipparcos

Scientific paper

This Technical Note gives a presentation of analyses of VLBI extragalactic reference frames performed in the framework of IERS, in the course of the maintenance of its conventional celestial frame. In section 1 the definition of the IERS celestial reference system and its relationship with the 1991 IAU Resolution A4 on Reference Systems are described. Section 2 is devoted to the comparison of celestial frames obtained from independent observation programs by GSFC, JPL, NGS and USNO. Section 3 gives an estimation of the expected accuracy of the link of the HIPPARCOS frame to an extragalactic frame and its time evolution based on VLBI observations of radio stars.

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